How to attach a mesh to the tongue so that it moves while talking?

[MayatheStrange8888]

So I've been trying to make a tongue piercing for my Sole Survivor. The mesh itself is looking just fine, the thing is I can't get it to fuction properly regarding the various bone weights I've tried attaching it to.

 

Attaching the mesh to the "HEAD bone" makes the piercing visible but static.

Attaching it to "skin_bone_C_MasterMouth" from "Femalemouth_facebones" makes the piercing seemingly disappear altogether.

I've also tried in desperation to attach the mesh in some ways to all the bones that may have got something to do with talking animations but nothing worked (That didn't surprise me though)

 

What am I missing?

If someone has any tip or idea of what I'm doing wrong, or might even know what I should do, please tell me!

 

Cheers

~Maya~